# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2 --- $id: http://devicetree.org/schemas/sound/rockchip,pdm.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: Rockchip PDM controller description: The Pulse Density Modulation Interface Controller (PDMC) is a PDM interface controller and decoder that support PDM format. It integrates a clock generator driving the PDM microphone and embeds filters which decimate the incoming bit stream to obtain most common audio rates. maintainers: - Heiko Stuebner allOf: - $ref: dai-common.yaml# properties: compatible: enum: - rockchip,pdm - rockchip,px30-pdm - rockchip,rk1808-pdm - rockchip,rk3308-pdm - rockchip,rk3568-pdm - rockchip,rv1126-pdm reg: maxItems: 1 interrupts: maxItems: 1 clocks: items: - description: clock for PDM controller - description: clock for PDM BUS clock-names: items: - const: pdm_clk - const: pdm_hclk dmas: maxItems: 1 dma-names: items: - const: rx power-domains: maxItems: 1 resets: items: - description: reset for PDM controller reset-names: items: - const: pdm-m rockchip,path-map: $ref: /schemas/types.yaml#/definitions/uint32-array description: Defines the mapping of PDM SDIx to PDM PATHx. By default, they are mapped one-to-one. maxItems: 4 uniqueItems: true items: enum: [ 0, 1, 2, 3 ] "#sound-dai-cells": const: 0 required: - compatible - reg - interrupts - clocks - clock-names - dmas - dma-names - "#sound-dai-cells" unevaluatedProperties: false examples: - | #include #include #include #include bus { #address-cells = <2>; #size-cells = <2>; pdm@ff040000 { compatible = "rockchip,pdm"; reg = <0x0 0xff040000 0x0 0x1000>; interrupts = ; clocks = <&cru SCLK_PDM>, <&cru HCLK_PDM>; clock-names = "pdm_clk", "pdm_hclk"; dmas = <&dmac 16>; dma-names = "rx"; #sound-dai-cells = <0>; pinctrl-names = "default", "sleep"; pinctrl-0 = <&pdmm0_clk &pdmm0_sdi0 &pdmm0_sdi1 &pdmm0_sdi2 &pdmm0_sdi3>; pinctrl-1 = <&pdmm0_clk_sleep &pdmm0_sdi0_sleep &pdmm0_sdi1_sleep &pdmm0_sdi2_sleep &pdmm0_sdi3_sleep>; }; };